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What is the correct ratio relation for (8x-3y+22=0) and (16x-6y+47=0)?

Answer and explanation

Correct answer: \(\frac{8}{16}=\frac{-3}{-6}\ne\frac{22}{47}\)

Here, \(\frac{a_1}{a_2}=\frac{8}{16}=\frac{1}{2}\) and \(\frac{b_1}{b_2}=\frac{-3}{-6}=\frac{1}{2}\), whereas \(\frac{c_1}{c_2}=\frac{22}{47}\), which is not equal to \(\frac{1}{2}\). Thus, \(\frac{a_1}{a_2}=\frac{b_1}{b_2}\ne\frac{c_1}{c_2}\), so the two lines are parallel and inconsistent; consequently, the pair has no solution. Exam tip: when the first two coefficient ratios are equal but the constant-term ratio is different, the pair has no solution.

Related tags

Linear EquationsRatio RelationSolvability ConditionsNo SolutionParallel LinesConditions For SolvabilityPair Of Linear Equations In Two VariablesMathematics

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